Method Actigraphy and daily record of sleep were used to study the circadian rest activity and sleep-wake rhythm patterns of the patients with MCI and of 20 age-matched normal people (control group).

• 方法使用静息-活动监测仪和睡眠日志研究MCI患者（MCI组）和年龄匹配的健康老年人（对照组）在自然环境下的睡眠与活动情况。